Wrench



D. FORNIRASEO.

WRENCH.

APPLICATION FILED MAR. 21, 1919.

1 83x550, Patented Apr. 20, 1926.

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DOMENICO FORNIRASEO, 0F KLAMATH FALLS, OREGON.

WRENCH.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Application filed larch 21, 1919. Serial No. 284,102.

'Wrenches, of which the following is a specification.

This invention relates to improvements in wrenches and has for itsobject to provide a wrench having a cam controlled movable aw.

Another object of the invention is to provide a wrench having a camcontrolled m'ovable jaw, said cam having means thereon for limiting themovement of said jaw.

V With the above and other objects in view, I have invented the deviceillustrated in the accompanying drawings in which Figure l is asectional elevational view of my improved wrench.

Fig. 2 is an edge view thereof.

Like reference characters indicate like parts throughout the followingspecification and in the views in the drawings in which 1 indicates ashank having one side of one end terminating in a fixed jaw 2, the otherside 5 of said end having an inclined groove 3 with an enlarged innerpart 4, said groove extending entirely through said side 5 and saidfixed jaw 2. The side 5 has inclined plane surfaces 6 and 7 upon which amovable jaw 8 seats and is slidable, said jaw 8 having a tongue 9 withan enlarged T- head 10 which operates slidably in the groove The tongue9 extends inwardly of the jaw 8 to form a shank 11 which is adapted toslide into the extension 12 of the groove 3, in said fixed jaw and whichalso forms one of the three walls or nut engaging surfaces of the wrenchjaws.

The enlarged part 4 of the groove or slot 3 extends into the shank toform a pocket 13 in which is pivoted a cam 14 with a serrated surface 15adapted to be normally held against the T-head 1.0 by a spring 16. Saidcam is provided with an outer operating lever 17, and an arm 18 whichextends into the path of the movable jaw 8 to limit its outer movementand prevent the same from becoming detached from the shank. The jaw8inay be moved inwardly to engage a nut and will freely slide over theserrated surface 15 of the cam 14 pressing the same out of its pathagainst the tension of the spring 16, but the serrated cam will bindagainst the T-head 10 to prevent outer movement thereof, said springforcing the cam action thereof. An outer movement of the lever 17 willrelease the cam from the T- head and permit movement of the jaw 8 in anoutward direction.

Having now described my invention, that which I claim to be new anddesire to procure by Letters Patent is 1. In a wrench, a shank having agroove and a fixed jaw, a sliding jaw having a tongue operating in thegroove and means for locking the sliding jaw against movement, 1n onedirection, said means consisting of a cam, said tongue being in the formof a T-rail, said groove conforming thereto, and extending into theshank to form a pocket for said cam, said cam being spring pressed, alever controlling the cam, means for limit ng the movement of thesliding jaw, said sliding jaw operating on an inclined plane, saidtongue extending to form a shank for the sliding jaw, said last meansbeing formed on said cam.

2. In a wrench, a shank having a grooi e and a fixed jaw, a sliding jawhaving a tongue operating in the groove and means for locking thesliding jaw against movement, in one direction, said means consisting ofa cam, said tongue being in the form of a T-rail, said groove conformingthereto, and extending into the shank to form a pocket for said cam,said cam being spring pressed, a lever controlling the cam, means forlimiting the movement of the sliding jaw, said sliding jaw operating onan inclined plane, said tongue extending to form a shank for the slidingjaw, said last means being formed on said cam, and consisting of an armextending therefrom.

3. In a wrenoh,.a shank having a groove and a fixed jaw, a sliding jawhaving a tongue operating in the groove and means for locking thesliding jaw against movement, in one direction, said means consisting ofa cam, said tongue being in the form of a T-rail, said groove conformingthereto, and extending into the shank to form a pocket forsaid cam, saidcam being spring pressed, a lever controlling the cam, means forlimiting the movement of the sliding jaw, said sliding jaw operating onan inclined plane, said tongue extending to form a shank for the slidingjaw, said last means being formed on said cam, and consisting of an armextending therefrom, said groove extending through said fixed jaw.

4. In a wrench, a shank having a groove and a fixed jaw, a sliding jawhaving a tongue operating in the groove and means for locking thesliding jaw against movement, in one direction, said means consisting ofa cam, said tongue being in the form of a T-rail, said groove conformingthereto, and extending into the shank to form a pocket for said cam,said cam being spring pressed, a lever controlling the cam, means forlimiting the movement of the sliding jaw, said sliding jaw operating onan inclined plane, said tongue extending to form' a shank for thesliding jaw. said last means being formed on said cam. and consisting ofan arm extending therefrom, said groove extending through said fixedjaw, said last shank forming a nut engaging surface.

In testimony whereof I afliX my signature in the presence of twowitnesses.

DOMENICO FORNIRASEO.

Witnesses Geo. CHASTAIN, W. H. A. RENNER.

